diff --git a/src/main/org/deidentifier/arx/ARXResult.java b/src/main/org/deidentifier/arx/ARXResult.java
index e672da56ce..1c105bd6c3 100644
--- a/src/main/org/deidentifier/arx/ARXResult.java
+++ b/src/main/org/deidentifier/arx/ARXResult.java
@@ -503,7 +503,7 @@ public void progress(double progress) {
      * @return The number of optimized records
      */
     public int optimize(DataHandle handle, double gsFactor, ARXListener listener) throws RollbackRequiredException {
-        return optimizeFast(handle, gsFactor, Double.NaN, listener);
+        return optimizeFast(handle, Double.NaN, gsFactor, listener);
     }
 
     /**